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Electroless deposition of nickel and its alloys

The state of the art places high demands on materials for the manufacturing of complex devices and mechanisms. One way to meet these requirements is to coat the materials woth thin layers of other materials, giving the products new disired properties. The small amounts of such the materials forming new alloys on the surface allow to obtaim a wide range of deposited materials that meet the desired conditions. Such thin layers with desirable properties can be formed using a very simple electroless deposition of metals. This method of metal deposition has a number of advanteges – low-cost process, simple technique, possibility to choose working conditions according to the required result. One of the main advantages of electroless deposition method is the ability to deposit metal coating with uniform thickness on the most complex substrate profiles, which is usually not possible by other methods. The requirement for the desired metal to undfergo a chemical deposition on the activated surface is to catalyze the oxidation of the reducing agent. Coatings thus deposited contain amopunts of phosphorus or boron (depending on the chouse of reducing agent) or the metals that alter trhe properties of the deposited metal.
 
The aim of this work is to investigate the peculiarities of electroless deposition of nickel coatings in the glycine or citrate solutions using morpholine borane as reducing agents, as well as to determine the composition of the coatings obtained and the  possibilities of their applications. Purposefully fpormed nickel and its alloys can br used not only as promising materials in fuel cells but also in manufacturing of various complex systems.
 
For more information, please contact the theme supervisor Z. Sukackienė